Cheap And Discounts JK BMS SMART JK-B2A8S30P 2A Active Balance Lifepo4 Battery 4S 5S 6S 7S 8S 300A 48V 60V BT Li-Ion LTO 18650 Battery Camping Ebike Wholesale. Buy Directly From Merchant EZKABO Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.